1
dc1905af
DEMO MANUAL DC1905A
Description
LTM4633
High Efficiency, Triple 10A
Step-Down µModule Regulator
Demonstration circuit DC1905A features the
LTM
®
4633EY
,
a high efficiency, triple 10A step-down power µModule
®
regulator. The input voltage range is from 4.7V to 16V with
common input source, or 2.375V to 16V with an external bias
supply. The output voltage range is 0.8V to 1.8V for Channel 1
and Channel 2, 0.8V to 5.5V for Channel 3. Derating is
necessary for certain V
IN
, V
OUT
, frequency and thermal con-
ditions. The DC1905A offers access to the TRACK/SS pins
allowing the user to program output tracking or soft-start
period. The board operates in continuous conduction mode
in heavy load conditions. For high efficiency at low load
L
, LT, LTC, LTM, Burst Mode, µModule, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
BoarD photo
currents, the MODE jumper (JP4) selects pulse-skipping
mode for noise sensitive applications or Burst-Mode
®
operation in less noise sensitive applications. Channel 1
and 2 can be connected in parallel for a single 20A output
solution with optional jumper resistors. The LTM4633 data
sheet must be read in conjunction with this demo manual
prior to working on or modifying demo circuit DC1905A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1905A
